Don't forget to do null pointer checking before trying to

dereference them.

markdown.c

@@ -758,7 +758,7 @@ static Paragraph *display(Paragraph*, MMIOT*, int);
 static void
 emit(Paragraph *p, MMIOT *f)
 {
-    int multiple = ( p->next != 0 );
+    int multiple = p && p->next;
 
     while (( p = display(p, f, multiple) ))
 	;
@@ -790,6 +790,8 @@ listdisplay(Paragraph *p, MMIOT* f)
 static Paragraph*
 display(Paragraph *p, MMIOT *f, int multiple)
 {
+    if ( !p ) return;
+    
     switch ( p->typ ) {
     case FORCED:
 	break;

tests/crash.t

@@ -0,0 +1,27 @@
+echo "crashes"
+
+rc=0
+
+echo -n '  hanging quote in list ............ '
+
+./markdown >/dev/null 2>/dev/null << EOF
+ * > this should not die
+
+no.
+EOF
+
+if [ "$?" -eq 0 ]; then
+    echo "OK"
+else
+    echo "Failed"
+    rc=1
+fi
+
+echo -n '  dangling list item ............... '
+
+if echo ' - ' | ./markdown >/dev/null 2>/dev/null; then
+    echo "OK"
+else
+    echo "Failed"
+    rc=1
+fi

tests/quote.t

@@ -1,10 +0,0 @@
-echo -n "quote................................"
-
-exec 2> /dev/null
-
-if ./markdown tests/quote.text >/dev/null; then
-    echo "OK"
-    exit 0
-fi
-echo "FAILED"
-exit 1

tests/quote.text

@@ -1,4 +0,0 @@
-1.  > this is a test
-
-
-And this is not a test.

tests/smarty.t

@@ -0,0 +1,102 @@
+echo "smarty pants"
+
+rc=0
+
+echo -n '  (c) -> © .................... '
+
+if  echo '(c)' | ./markdown | grep '©' >/dev/null; then
+    echo "OK"
+else
+    echo "FAILED"
+    rc=1
+fi
+
+echo -n '  (r) -> ® ..................... '
+
+if  echo '(r)' | ./markdown | grep '®' >/dev/null; then
+    echo "OK"
+else
+    echo "FAILED"
+    rc=1
+fi
+
+echo -n '  (tm) -> ™ .................. '
+
+if  echo '(tm)' | ./markdown | grep '™' >/dev/null; then
+    echo "OK"
+else
+    echo "FAILED"
+    rc=1
+fi
+
+echo -n '  ... -> … .................. '
+
+if  echo '...' | ./markdown | grep '…' >/dev/null; then
+    echo "OK"
+else
+    echo "FAILED"
+    rc=1
+fi
+
+echo -n '  -- -> — .................... '
+
+if  echo '--' | ./markdown | grep '—' >/dev/null; then
+    echo "OK"
+else
+    echo "FAILED"
+    rc=1
+fi
+
+echo -n '  - -> – ..................... '
+
+if  echo 'regular - ' | ./markdown | grep '–' >/dev/null; then
+    echo "OK"
+else
+    echo "FAILED"
+    rc=1
+fi
+
+echo -n '  A-B -> A-B ....................... '
+
+if  echo 'A-B' | ./markdown | grep '–' >/dev/null; then
+    echo "FAILED"
+    rc=1
+else
+    echo "OK"
+fi
+
+echo -n '  "fancy" -> “fancy” ... '
+
+if  echo '"fancy"' | ./markdown | grep '“fancy”' >/dev/null; then
+    echo "OK"
+else
+    echo "FAILED"
+    rc=1
+fi
+
+echo -n '  '"'fancy'"' -> ‘fancy’ ... '
+
+if  echo "'fancy'" | ./markdown | grep '‘fancy’' >/dev/null; then
+    echo "OK"
+else
+    echo "FAILED"
+    rc=1
+fi
+
+echo -n "  don't -> don't ................... "
+
+if  echo "don't" | ./markdown | grep "don't" >/dev/null; then
+    echo "OK"
+else
+    echo "FAILED"
+    rc=1
+fi
+
+echo -n '  `` ` `` -> <code> ` </code> ...... '
+
+if  echo '`` ` ``' | ./markdown | grep '<code> ` </code>' >/dev/null; then
+    echo "OK"
+else
+    echo "FAILED"
+    rc=1
+fi